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26 Humeral and intracardiac mechanism of heart` regulation
26 Humeral and intracardiac mechanism of heart` regulation

circulatory ppt #1 - Liberty Union High School District
circulatory ppt #1 - Liberty Union High School District

... • The SA node receives electrical impulses. This SA node is located on the upper right atrium. • This node serves as the hearts pacemaker, regulating the pace and initiating the beat sequence. • Electrical impulses from the SA node spread throughout both atria and the muscle fibers depolarize , caus ...
Acute Pericarditis
Acute Pericarditis

... This still frame illustrates the posterior echo free space of a pericardial effusion (PE). The real time study also revealed normal cardiac size and function. ...
Pre-Dissection Activity
Pre-Dissection Activity

... that causes a blockage  Thrombosis – blockage of an artery or vein due to a blood ...
Study Questions
Study Questions

... 9.1 Multicellular organisms need a circulatory system if ...
Arrhythmogenic right ventricular dysplasia /cardiomyopathy with
Arrhythmogenic right ventricular dysplasia /cardiomyopathy with

... myocardial fat infiltration and diagnosing ARVC (1-3). Because of its excellent spatial and temporal resolution, CT has received much attention in diagnosing of ARVC. It has been reported that CT findings of ARVC are (a) a dilated right ventricle, b) abundant epicardial adipose tissue, (c) conspicuo ...
Electrical Treatment for Cardiac Abnormalities ACPF – 1-0
Electrical Treatment for Cardiac Abnormalities ACPF – 1-0

... pulseless ventricular tachycardia A energy used to settle a chaotic heart rhythm temporary into asystole, in the hopes that some pacemaker cell in the heart will start an organized rhythm. Start with 200J, then 300J and 360J ...
Atrial Fibrillation
Atrial Fibrillation

... Multiple impulses from different areas move toward the AV node. Produce an irregular ventricular response ...
Vericel to Present Data at the American Heart Association`s
Vericel to Present Data at the American Heart Association`s

... catheter-based injections to patients with end-stage heart failure due to ischemic DCM, who have no reasonable revascularization options (either surgical or percutaneous interventional) likely to provide clinical benefit. The primary endpoint of the ixCELL-DCM clinical trial study was a composite of ...
supraventricular rhythms i
supraventricular rhythms i

... (Fig. 2.3A). The intracellular fluid of the atrial cells is in contact with that of neighboring cells via gap junctions, allowing the depolarization to spread from cell to cell throughout the atria (Fig. 2.3B). This results in the P wave of the ECG. The atrioventricular (AV) node is surrounded by at ...
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Document

...  Tightness in chest. Tingling in left arm, abnormal breathing, no circulation ...
Cardiac Medications
Cardiac Medications

...  1998 N.Z. had age-standardised mortality rate from CAD of 111/100,000 people  CAD death rates for Maori less than 75 yrs old are 2-3X higher than non-Maori and 2X as high for Pacific peoples. ...
Taking Heart Medicines at Home: How They Will Help Your Heart
Taking Heart Medicines at Home: How They Will Help Your Heart

... Your beta-blocker is ________________________. It may be used to lower your heart rate, so the heart does not have to work too hard. It is also used to treat high blood pressure, chest pain, irregular heartbeat and symptoms of heart failure. • If you take a beta-blocker during and after a heart att ...
Supraventricular Tachycardias SYMPTOMS: Associated historical
Supraventricular Tachycardias SYMPTOMS: Associated historical

... Fast sodium channel blockers, best for VT; they will lengthen the refractory period of the accessory pathway and sometimes terminate AF. In WPW with atrial fibrillation, these drugs are used if DC cardioversion is impossible. ...
Electrocardiography (ECG) Handout Introduction
Electrocardiography (ECG) Handout Introduction

... Our experience was that gradual study of an ECG textbook combined with using a systematic approach to ECGs encountered at the hospital quickly build up both theoretical knowledge about the ECG as well as an ability to recognise common problems... If you are new to ECG interpretation, using a methodi ...
Automated Analysis of the 12-lead ECG in the Emergency
Automated Analysis of the 12-lead ECG in the Emergency

... were recorded using the GE-Marquette MAC 5000 ECG system (GE Medical Systems, Milwaukee, WI) at the JHH ED in the time period from January 16, 2012 to June 22, 2012. Each 12-lead ECG was reviewed and clinically evaluated by 2 investigators (D.G. and L.G.T.), blinded to all other clinical data. For e ...
Full Text [Download PDF]
Full Text [Download PDF]

... the QT intervals were directly compared. Vision symptoms are transient and do not affect the quality of life. Further, it was found that they led to few withdrawals (< 1%; 24 of 2545 patients) and resolved during treatment in 77.5% (383 of 491) patients. Ivabradine does not affect other tissues.14 T ...
PAG2.1 Student Dissection of the mammalian heart_v0.238.86
PAG2.1 Student Dissection of the mammalian heart_v0.238.86

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... additional stimulation  Long refractory period prevents tetanic contractions ...
Perioperative Management of Geriatric Patients with End
Perioperative Management of Geriatric Patients with End

... meet metabolic demands. Initially, the left ventricular end-diastolic volume increases, which causes an improvement in pump function and cardiac output via the Starling mechanism. As the left ventricle dilates and hypertrophies, a change in its geometry occurs, and it becomes more spherical (ventric ...
Chronic heart failure
Chronic heart failure

... swelling of the legs, heaviness in the right upper quadrant, an attack of breathlessness at night. In the 50 years suffered a myocardial infarction, 3 months began to notice shortness of breath, and a year later - the swelling. Objectively: general condition - moderate. Cyanosis of lips, swelling of ...
Study Guide – Bones, Muscles, Circulatory System
Study Guide – Bones, Muscles, Circulatory System

Studying Heart Rate
Studying Heart Rate

... rate, also called the cardiac rate or pulse, is measured in beats per minute (bpm). The more times the heart contracts (beats) within one minute, the faster the heart rate. Many physiological factors or conditions influence heart rate—some of the most important include age, gender, heart disease, st ...
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... VESSELS) ...
What do you want to know? - MyMATLTE-Portfolio
What do you want to know? - MyMATLTE-Portfolio

... Change – online assessment will contain matching of heart sound vocabulary to disease patterns. Completion of short answers that recalls short amounts of information. The results are administered directly after completion of the assessment; this determines if additional study is required. How will y ...
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Electrocardiography



Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.
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